如何调用 PHP 函数?

How do I call this function to my HTML page I where I want the forms to appear?

<?php
    function login_bar() {
        global $user;
        if ($user->uid == 0) {
            $form = drupal_get_form('horizontal_login_block');
            return render($form);
        }
        else {
            // You can also integrate other modules such as private
            // messages to show unread / read messages here.
            return '<div id="loginbar"><p>' .
                   t('Welcome back ') .
                   ucwords($user->name) .
                   '<p></div>';
        }
    }
?>

推荐答案

在 HTML 页面的 form 标签中:

<form type="post" action="test.php">

<?php
    function login_bar() {
    }

    // If you want to call the function on some button click:

    if (isset($_POST['submit']))
    {
        login_bar();
    }
?>